Thirds to frank soley and james wolstencroft



(No Model.)

W; H. S'OLEY.

THERMOTIO CIRCUIT CLOSER.

Patented Dec. 11, 1888.

n, D, c.

N. PETERS. Pnow-umu m m. \VaiHngQO UNITED STATES PATENT OFFICE.

\VILLIAM H. SOLEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TIYO- THIRDS TO FRANK SOLEY AND JAMES \YOLSTENCROFT, BOTH OF SAME PLACE.

THERMOTIC CIRCUIT-CLOSER.

SPECIFICATION forming part of Letters Patent No. 394,413, dated December 11, 1888.

Application filed March 29, 1888. Serial No. 268,882. (No model.)

To all whom it may concern; j contraction of the same, due to variations in Be it known that I, IVILLIAM H. SOLEY, a the temperature to which it is subjected, citizen of the United States, and a resident of cause the free end of the strip to move in the Philadelphia, Pennsylvania, have invented directions pointed out by the arrows 1 and 2,

5 certain Improvements in Thermostatic Fire- Fig.1,a fallin temperaturecausingmovement Alarms, of which the following is a specificain the direction of the arrow 1 and a rise in tion. temperature causing a movement in the direc- The object of my invention is to so construct tion of the arrow 2, and this movement being an electro-thermostatic fire-alarm as to insure 1 transmitted to the lever D, so as to cause the To sensitiveness in its operation and to provide finger (l at the end of the same to move from for accurately adjusting it for action at any i or toward the head of the terminal F. desired temperature. These objects I attain If the increase in temperature is such as to in the mannerhereinafter set forth, reference bring this tinger into contact with said termibeing had to the accompanying drawings,in na l F, the circuit is completed from the post 15 which Y a: to the post 11 so as to effect the sounding 0t Figure 1 is a side view of an electro-therany appropriate alarm introduced in the cirmostatic fire-alarm constructed in accordance cuit. with my invention; Fig. 2, an inverted plan The use of the lever D in connection with view of the same. the thermostat l3 materially increases the sen- 20 A is a supportingplate or block, which may sitiveness ot the apparatus, as, owing to the be secured by means of screws to or other difference in the length of the two arms of the equivalent fastening-s in any suitable position said lever, movement of the free end of the upon the ceiling, wall, or other portion of the thermostat is materially increased at the end room or apartment to be protected. From this of the long arm of the lever.

25' block projects a post, Z), to which is secured In order to accurately regulate the temperone end of the thermostatic expansion-strip ature at which the electrical contact will be B, the latter being composed, as usual, of two made and the alarm sounded, I secure to the strips of metal having different qualities of block A a gage-plate, .I, to which is hung a leeXpansion and contraction underthe influence Ver, K, one arm of which is forked and em- 0 of changes in temperature, this strip being in braces the head of the set-screw F, while the the form of a loop, the free end of which is other arm is pointed and travels over a gradujointed to the short arm of a lever, D, which ated scale on the plate J, so that 011 turning is hung to a post, f, on the base-block A, the the set-screw F, so as to raise or lower the long arm of the leverbeingbent so as to form same, the pointed end of the lever Kis caused 5 a finger, (l, which terminates above the head to travel over the gage and accurately indiof aset-screw, F, adapted to a threaded stud, cate the temperature to which the alarm is g, on the block A, and secured in position, after set. adjustment, by means of a lock-nut, F. The indicator-lever K may have a bearing At one end of the block A are two bindingupon but one side of the head of the set-screw 40 posts, a: and 3 which are connected, respect- F, if desired, being kept in contact with the ively, to the positive and negative wires of same by means of a spring, as shown by dotany suitable battery or other generator of elected lines in Fig. 1; but the forking of the short tricity, the post so being in electrical connecarm of the lever for engagement with the head tion through a wire, as, with the post I), carryof the set-screw is preferred, as the movement 5 ing the thermostat B, and the post 3 being in of the lever is thus rendered positive in both 5 electrical connection, through a wire, y, with directions.

the stud g, carrying the set-screwF. Thelat- Having thus described my invention,what I ter thus becomes the terminal of one wire and claim, and desire to secure by Letters Patent, the lever D the terminal of the other wire. is

50 The strip B is such that the expansion and The combination, in an electro -tl1ern1o- IOO static alarm, of the adjustable terminal con- In testimony whereoflhave signed my name 10 nected to one pole, the expansion-thermostat to this specification in the presence of two subconnected to the other pole, a lever, one arm scribing Witnesses. of which is connected to the free end of said 5 thermostat and the other arm adapted to make \VM. H. SOLEY.

contact with the terminal, a gage-plate having a scale, and an indicator-lever engaging Vitnesses: with and movable by the adj nstable terminal, IsAAC H. \VOLSTENCROFT, all substantially as specified. HENRY HOWSON. 

